Hollow structure for radiators, condensers, and the like.



F. A. FELDKAMP. HOLLOW STRUCTURE FOR RADIATORS, CONDENSERS,IAND THE LIKE.

APPLICATION FILED M AR.26| 19M.

Patented July 18, 1916.

INVENTOR'.

WITNESSES:

I ll '7 FreHen RHFaIflK IFr I BY wyfow ATTORNEYS,

. F- A. FELDKAMP. I HOLLOW STRUCTURE FOR RADIATORS, CONDENSERS, AND THE LIKE. 1,191,61.

Patented July 18,1916.

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I INVEOR'.

APPLICATION FILED MAR. 26,1914.

' and width, but which, however, is quite thin UNITED STATES ATE,

FREDERICK A. EELDKA'MP, 0 NEWARK, NEW JERSEY, ASSIGNOR o ELEcTEoLYTIc I oEEroE.

PRODUCTS CO., A CORPORATION OF NEW JERSEY.

HoLLow sTEUcTUEE EoE EAD AToEs, CONDENSERS, AND THE LIKE.

7 '0 all whom it may concern Be it known that I, FREnmncK A. F ELD- ignrr, a citizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, have-invented certain new and useful Improvements in Hollow Structures for Radiators, Condensers, and

the like; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and 'to characters of reference marked thereon, which form a part of this specification.

This inventionhas reference, generally, to a novel article of manufacture in the form of a comparatively thin and hollow element, as a band of metal; and, the present invention relates, more particularly, to a thin and hollow structure, in the form of a band of metahwhich may be of any suitable length with respect to the length and width of the same.

The invention, therefore, has for its principal. object to provide a thin and hollow metal structure of, the general character hereinafter more particularly set forth which is especially adapted for use in the construction of radiators for automobile and house-purposes, but which may also be used in the construction of condensers of the various kinds, in refrigerating and coolingdevices, and other devices in the various arts -where such thin and hollow metal structures are. applicable.

The invention has for its further object to, provide a thin and hollow metal struc-- ture comprising a single piece of metal which is doubled upon itself and has its longitudinally extending marginal edges united by means-of a tight seam, the fiat walls of the structure being provided with inwardly and registering reinforcing members or elements, in the form of tubular studlike projections, having theirinteriorly located and registering portions closed, and then suitably united, either .by means of solder, or amechanical fastening means of any suitable construction.

Other objects of this invention not at this time more particularly enumerated will be Specification of Letters Patent.

'to and showing one embodiment .c1ples of the present invention;

Patented July 18, 19 16.

Application filed March 26, 1914. Serial N 0. 827,264.

clearly understoodfrom the following detailed description of'the present invention.

lVith the various objects of the present invention in view, the invention consists, primarily, in the novel hollow band of the gen eral character hereinafter more 4 particu larly set forth.

The invention is clearly illustrated inthe accompanying drawings, in which Figure 1 is a face view of a portion of a thin and hollow structure made according of the prin- I Fig. 2 is a transverse section of the same, said section being taken on line 22 in said Fig. 1; and Fig. 3 is a similar section taken on line 33 in said Fig. 1, said Figs. 2 and 3 being considerably enlarged. Fig. 4 is a transverse sect1onal representation of a blank provided with stud-like projections, the blank being represented in its flat condition before being' doubled upon itself to provide the structure represented in said Figs. 1, 2 and 3 of the drawings. Figs. 5 and 6 are transverse sectional representations of portions of a hollow metal structure and registering studlike projections, respectively representing a method of producing and providing a mechanical clamping means for positively connecting the registering stud-like projections; and Figs. 7 and 8 are similar sectional representations of portions of a modified hollow 1 metal structure and registering stud-like projections, respectively representing another llllel'llod of producing and providing a me chanical clamping means for positively conwidth, the said blank being formed centrally and longitudinally with a slightly and suit ably shaped raised portion, as 2, the said raised portion forming a division located between the two portions 3 and 4 of the.

said blank 1.- Simultaneously with producing the blank 1 with said rib-like raised portion 2, the said portions 3 and 4 are also neeting registering stud-like projections,

produced with hollow stud-like projections,

of the drawings.

as 5, which may be of any suitable shape, but are preferably of conical configuration, as shown, and are closed, as at 6. This .structure thus provided, and indicated in stud-like projections, and the longitudinally extending surface-portions 7, S, 9 and 10 of the metal blank 1, are suitably tinned, as

at 11, see Fig. 4. The blank 1 is then doubled upon itself upon the raised portion or division 2, so that the tinned surface-por tion 9 will rest upon the tinned surface-portion 10, that the tinned surface-portion 7 will rest upon the tinned surface-portion 8, and that the tinned closed ends 6 of the respective stud-like projections 5 of the blank-portion 3 will rest upon the tinned ends of' the respective and correspondingly placed stud-like projections 5 of the blankportion 4. The structure is then passed between suitably heated surfaces, as a pair of suitable hot rollers, to bring the tin at the various tinned surfaces to the melting point, at the same time applying sufficient pressure to insure a good contact or union. The structure thus doubled upon itself is then allowed to cool, so as to provide a positive union of the contacting portions, by passing the structure between cold rollers, or otherwise, and at the same time providing the closed longitudinally extending marginal joint 12, and the overlapped or doubleseamed marginal and longitudinally extending joint 13, shown more particularly in Figs. 1, 2 and 3 of the drawings,'and to provide a finished hollow structure, open at its respective ends, and marginally closed at its longitudinal edges, so as to produce a water or steam-tight structure, as. will be clearly evident.

Referring now to Figs. 5 and 6 of the drawings, I have provided the two portions 3 and 4' of the blank with registering studlike projections, as 20, said projections having contacting closed ends, as 21; but, instead of permanently securing said contacting ends 21 together by means of solder, as in the'construction shown in said Figs.

1 4504 inclusive, the closed end of one of said pro ections has struck up in said closed end a small tubular stud-like" male projection, as 22, while the closed end of the other of said projections 20 has struck up therein a socket-like female member or portion, as 23,

extending into the'interior of the main studlike projection 20, substantially as illustrated in Fig. 5 of the drawings. As shown in said Fig. 5, the male projection 22 enters the socket-like female member or portion 23, this being the case with all of the interiorly and registering projections 20 of the complete structure. By means of a punch or other suitable tool, the registering male and female members 22 and 23 arethen upset or riveted down, as shown in Fig. 6, whereby the two members 22 and 23 are positively united against separation, and whereby, furthermore, the registering hollow stud-like projections 20. are mechanically united without'the use of solder or the method of tinning herein-before described. While in the construction represented in said Figs. 5 and 6, the registering hollow stud-like projections are each provided with a single securing means, a plurality of fastening means may be' provided, somewhat in the manner indicated in Figs. 7 and 8 of the drawings. .In this modified construction, the

two portions 3 and 4 of the blank are provided with the main registering stud-like projections 24, said projections having closed contacting ends, as 25. The closed end of one of said projections has struck up in said end a plurality of small tubular studlike male projections, as 26, and the closed end of the other of said projections 24 has struck up therein a corresponding number of socket-like female members orportions, as 27, extending into the interior of the main stud-likeprojecti on 24, as indicated in F 7 of the drawings. As shown the corre sponding male projections or members 26 enter the correspondingly located socket-like female members 27, and then by means of the proper tools the several registering and interconnected male and female members 26 and 27 are flattened down and brought into a positively clamped and locked relation with each other, whereby the several registering main hollow stud-like projections 24 of the main structure are -mechanically united against separation, as will be clearly understood from an inspection of said Fig. 8 of the drawings. I

The herein-above described hollow metal structure may be put to various uses, in practice, the general uses to which such structures may be put being in the construction of radiators or coolers for automobiles in which the hollow spaces between the wallportions of the structures, arranged in sec tions in the frame-work of the radiator,

provide a water-receiving space or spaces through which the hot water passes, the heat radiating readily through the thin walls of the main structure, as well as through the walls of the various stud-like projections of the constructions represented in the several figures of the drawings. The

hollow metal structures made according to great strength, and the thin wall-portions all being of uniform thickness,

, the structure the usual cements or be used for uniting I structure is made of aand quite thin, and the structure itself 'being thin, radlatlng surfaces of great-efliciency are produced.

While in the foregoing I have described the structure of being made of metal, and

preferably of .thin sheet-metal, still I am aware'that the structure of the present invention may be made of plastic material, such as celluloid, 'or the like, in which case maybe put to uses other than radiating or cooling purposes. .1

Of course it'will be understood, when the plastic material, that collodion solvents may the various contacting parts of the hollow structure.

Of course it will be understood, that some changesmay be made in the general arrangements and constructions of the various parts of the hollow structure without departing from the scope of the present invention as set forth in the foregoing specification and as defined inzthe clauses of the claims which are appended thereto. Hence,

I- do not limit my lnvention to the exact de-' tails of the construction of the said parts as described in the said specification, nor

do I confine myself to the exact details of the construction of the said parts as illus} trated in the accompanying drawings.

Iclaim: 1. As a new article of manufacture, a

hollow structure comprising oppositely placed-portions and connecting edge-por-. tions, theDPPositely placed portions being. provided with interiorly extending and registering non-perforated hollow stud-like oppositely placed portions with interiorly extending projections formed with contacting closed ends.

low structure comprising.

positel placed portions and' connecting ed y ge-portions, the

. and registering non-perforated hollow stud-like projections means for permanently uniting the contact-- formed with contacting a0l0Sed. ends, and

2. .As a new article of manufacture, a 1101-.

being provided low like projections. 7

3. As a new article of manufacture, a hollow ,structure made from a blank doubled upon itself so as to be provided with doubled-over and longitudinally extendin coning closed ends of thesaid registering holtacting portions forming one edge 0 said structure, and being formed furthermore with longitudinally extending "marginal portions lapped over and pressed together -to form another edge of said structure, the doubled-over portions of the blank being provided with interiorly projecting and registering hollow. stud-like projections formed with contacting closed ends.

4. As a new article of manufacture, a hollow structure made from a blank doubled upon itself so as to be provided with doubled-over and longitudinally extending con tacting portions forming one edge of said structure, and being formed furthermore with longitudinally extending marginal portions lapped over and pressed together to form another edge of said structure, the doubled-over portions of the blank being -provided with interiorly projecting and registering hollow stud-like projections formed with contacting closed ends, and means for permanently uniting the contacting closed parts of the said registering hollow pro- .jections.

5. As anew article of manufacture, a hol- .low structure madefrom a blank doubled upon itself so as to be'provided with ,dou-' bled-over and longitudinally extending contacting portions forming one edge of saidstructure, and being formed furthermore with longitudinally extending marginal portionslapped over and .pressed together to form another edge of said structure, the

-. doubled-over portions of the blank being provided with interiorly projecting and registering hollow stud-like projections formed with contacting closed ends, and-the. said doubled over and lapped marginal portions of the blank and said registering hollow united with solder. 4

In testimony that I claim the invention set forth above I have hereunto set my hand this 24th day of March, '1914.

Witnesses: r I FREDKC. FRAENTZEL, g FREnK H.'FRAE1vrznL.

the closed parts of the projections being FREDERICK A. FELDKAMP, 

